Search results

Both the MN3101 and CD4047 are CMOS devices which in general have rather undefined behavior with unconnected gate inputs. There must be some detail of the MN3101 output gate circuit that allows it to be driven backwards from the output pin and thus drive the next inverter inside the chip...

PS. A quick google for AD-900 schematics turned up this one which someone manually traced the circuit to produce, and it shows the slave MN3101 is driven from pin 7, not pin 6. This is what I would expect. And I think I know why the CT1301 does not operate correctly in this configuration.

Wow, thanks for the excellent testing and debugging! That circuit design is interesting. It seems that both clock chips will put out the same frequency -- IC4 does not oscillate, but is driven by the oscillation of IC5 so both clocks run at the same speed. So I wonder why there are two clock...

Hi all, we have developed a simple drop-in replacement for the MN3101 BBD clock chip for use with MN300X series BBDs. The CT3101 is a small PCB with the same DIL-8 footprint and same pinout as the MN3101. It is based on the CD4047 and includes the Vgg (14/15 Vdd) output voltage, and supports...

We have a customer looking for someone to help them with an FV-1 design including programmable effects and integration with a display. If you have experience with this and are interested, contact us (PM us here, or send us an email) and we will put you in touch with them. (Disclaimer: We have no...

FYI we have been out of the Xvive MN3005 for a while, but have more coming in this week.

We gave up trying to sell on Amazon a long time ago. They are worse than Ebay at letting junk on their marketplace, reviews are easily rigged, and as a seller you have almost no control over how (or even if) your product is presented.

We just got the V3102's back in stock last week. Coolaudio seems to be getting back in gear production-wise.

I don't think there is a Coolaudio 2159 currently in production.

Yes we do, and no minimum order... on anything, ever.

Yeah, a lot of people don't realize the part number tells you a lot... V3207, V3208, V3205SD, V3102 - Current production, high quality parts made by Coolaudio. These are the only BBD chips Coolaudio makes. These were unobtainable for a long while during the semicon shortage. MN3207, MN3102 -...

Yes we have plenty of the Coolaudio chips, but we are not going to stock the MN3207 "NOS" any more -- too high a rate of failure and dead chips.

Yeah, like FV-1s, V3207, V3201, and V3205SDs all came in recently... enjoy!

FYI, the V3207 and V3102 are (finally) back in stock. We consider them more reliable and consistent than the NOS MNxxxx chips (in fact we have stopped selling the NOS MN3207).

Isn't "LDR" the same thing as "Vactrol" -- e.g. photo resistor and a light source? I think Vactrol is just a brand name... is that not correct?

FYI, we just obtained a reflow station and may start offering pre-soldered FV-1s. That is, if we can ever get FV-1s in stock again! :) Current estimate is June/July but no telling for sure.

We feel like we are, therefore we are :cool:

Was there a problem with checking out? We have plenty in stock (including some nice PedalPCB FV-1 DIL adapter boards :)).

If you think you might have a bum MN3207, just drop us a line and we will gladly send you a replacement.

In reality, that 10% failure rate is true for most all NOS BBDs, we are just trying to be honest about it. That said, the whole "NOS" thing is, IMHO, a bit of nonsense. Here is an un-official take: Panasonic/Matsushita stopped making BBDs like 15+ years ago. It seems improbable that there were...